Growing patient volume is driving a new $33.5 million expansion underway at Pelham Medical Center in Greer.

“Four years ago, the emergency department saw, on average, 60 to 65 people a day,” said Tony Kouskolekas, president of the medical center, which is part of Spartanburg Regional Healthcare System.

“Now we average almost 100 a day,” he said.

PMC, which opened in 2008 off Highway 14, offers emergency and primary care, diagnostics, medical and surgical specialties, surgery and a cancer center.

The expansion will add a new 55,000-square-foot multi-floor space to the center that will add a unit next to the emergency department and include nine observational beds, officials said.

“We currently have a 14-bed emergency department, but we’ll be more than doubling that size,” said registered nurse Lori Garrett, who works in the center’s emergency department. “I’m looking forward to more rooms and more areas to see the patients in a quicker fashion.”

The expansion also will include MRI capability. Patients who need this imaging test now are taken across the street to the campus medical office building.